HIV activist Boubacar Alpha Diallo tests a man for HIV at the MSF mobile clinic in the neighbourhood of Tombolia, Conakry, Guinea on March 18, 2016. The man in is an imam from the local mosque and explains that he has been faithful to his wife since they have been married. He is relieved when his results show he is HIV negative. Bouboucar encourages the man to ask his wife to be tested also to be completely sure they are both HIV negative. MSF launched a HIV testing campaign in Conakry with the support of health authorities moving throughout several neighbourhoods throughout 2016.

Despite countries in West and Central Africa having a relatively low HIV prevalence (